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Table 2

Parameters of the system V2291 Oph.

Primary Secondary

Mass (M) 3.86 ± 0.15 2.95 ± 0.09
Radius (R) 32.9 ± 1.5 3.0 ± 0.2
Teff (K) 4 850 ± 100 11 000 ± 500

Notes. These data are taken from Schröder et al. (1997).

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